This happened to me just today! Somebody stopped me to ask for directions to a church. I could see it in my mind's eye but I could not direct her, despite the fact that, on reflection, I had just walked past it on my way home and I've walked past it a thousand times before.

I find myself frequently getting lost in the city that's been my home for seven years. I always recognise where I am... I just don't know where I am in relation to anywhere else. I forget how to get to my local shop that I've been going to for years, making wrong turns and confusing myself.